operaTIon
IOM 1210-1 • MAGNITUDE
®
MODEL WMC CHILLERS 56 www.DaikinApplied.com
Table 24 continued: Controller Setpoints
Description Default Range PW
Leaving Water
Cool LWT 44. 0°F 35.0 to 80.0 °F O
Startup Delta T 3.0°F 0.0 to 10.0 °F T
Stop Delta T 3.0°F 0.0 to 3.0 °F T
LWT Reset Type NONE NONE, RETURN, 4-20mA T
Max Reset Delta T 0.0°F 0.0 to 20.0 °F T
Start Reset Delta T 10. 0°F 0.0 to 20.0 °F T
Timers
Evap Recirculate 0.5 min 0.2 min to 5 min M
Start-Start 5 min 2 to 60 min M
Stop-Start 3 min 1 to 20 min M
Source No Start 70 °F 50 to 99 °F T
Pumps
Evap Pump Pump #1 Only Pump #1 Only, Pump #2 Only, Auto Lead, #1 Primary, #2 Primary M
Cond Pump Pump #1 Only Pump #1 Only, Pump #2 Only, Auto Lead, #1 Primary, #2 Primary M
Cooling Tower
Tower Control None None, Temperature, Lift T
Tower Stages 1 1 to 4 T
Stage Up Time 2 min 1 to 60 min T
Stage Down Time 5 min 1 to 60 min T
Stage Differential (Temp) 3.0 °F 1.0 to 10.0 °F T
Stage Differential (Lift) 6.0 psi 1.0 to 20.0 psi T
Stage #1 On (Temp) 70 °F 40 to 120 °F T
Stage #2 On (Temp) 75 °F 40 to 120 °F T
Stage #3 On (Temp) 80 °F 40 to 120 °F T
Stage #4 On (Temp) 85 °F 40 to 120 °F T
Stage #1 On (Lift) 35 psi 10 to 130 psi T
Stage #2 On (Lift) 45 psi 10 to 130 psi T
Stage #3 On (Lift) 55 psi 10 to 130 psi T
Stage #4 On (Lift) 65 psi 10 to 130 psi T
Cooling Tower Valve / VFD
Valve/VFD Control None None, Valve Setpoint, Valve Stage, VFD Stage, Valve SP/VFD Stage T
Valve Setpoint (Temp) 65 °F 40 to 120 °F T
Valve Setpoint (Lift) 30 psi 10 to 130 psi T
Valve Deadband (Temp) 1.0 °F 0.0 to 10.0 °F T
Valve Deadband (Lift) 1.0 psi 0.0 to 20.0 psi T
Stage Down @ 20% 0 to 100% T
Stage Up @ 80% 0 to 100% T
Valve Control Range (Min) 10% 0 to 100% T
Valve Control Range (Max) 100% 0 to 100% T
Valve Type NC Normally Closed, Normally Open (To Tower) T
Minimum Start Position 10% 0 to 100% T
Minimum Position @ 60 °F 0 to 100 °F T
Maximum Start Position 100% 0 to 100% T
Maximum Position @ 90 °F 0 to 100 °F T
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